Application-level market taxonomy divides demand across pond culture, recirculating aquaculture systems (RAS), hatcheries, and ornamental fish farms. Pond culture absorbs the greatest absolute spend, reflecting sheer biomass and recurrent bacterial episodes in static water. RAS facilities, while fewer, generate higher spend per kilogram because disease amplification in biofilters necessitates zero-tolerance regimens, boosting uptake of combo antiviral–immunomodulator packs. Hatcheries prioritise prophylactic antibiotics to protect early fry survival, whereas ornamental channels favour high-margin, small-volume SKUs, sustaining price elasticity for patented antivirals. This application matrix calibrates regional revenue distribution and forecasts capital allocation within the infectious dropsy treatment market.